i've tried playing online awhile ago and it only worked the first time, now everytime i try its like there isn't any room at all , and when i create a room no one joins, i doubt the game is region locked since i did play it once online, so whats the problem?

NAT settings issue perhaps?

other games work perfectly without issue (Except Gears 2), so it must be something else.

NAT could be an issue depending on the size of the userbase.  Regardless of NAT being the issue, userbase is probably the main culprit.  Is this a recent development for you?

i'm trying it right now, like i said i've only played it once when i first got the game, but only once.

Is there anywhere that says a total number of people playing the game?  I seem to remember it somewhere on one of the screens.

nope, can't find it.

so anyone else?

no one wants to help ;_;

Could it be that.....no ones playing?  I thought the PC version would be much more active.....probably wrong but whatev lol haha